LOCos?
There is an underlying assumption running through this thread that LoCos like Ryanair are cheaper than legacy carriers. That is often the case for the single traveller who is computer savvy, travels light and is flexible about timings.
However, it is always worth checking the the websites of the classic carriers - having done your arithmetic carefully on the many ingenious but cumulatively expensive add-ons per sector of airlines like RYR.
Remember that British scheduled airlines give the total price upfront whereas the RYR basic can increase exponentially. The modern inability to do any kind of mental arithmetic helps them get away with it!
I have often found that BMI and BA can compete with or even undercut MoL on fares - and the experience is much more pleasurable!